核磁共振测井技术在储层评价中的应用

APPLICATION OF NUCLEAR MAGNETIC RESONANCE LOGGING TECHNIQUE TO RESERVOIR EVALUATION

核磁共振成像测井能够直接探测地层物性、含油性和流体类型,解决其他常规测井方法在计算地层孔隙度、渗透率、含油气饱和度时受岩性等因素影响的问题,不仅可以识别地层中不同大小的孔隙而且还可以不依赖于电阻率就直接识别地层中油气水的类型。利用核磁共振测井资料可以更好地评价储层物性,尤其在可动流体分析上具有独到的优势。为此,主要论述了核磁共振测井在储层物性、含油性和储层流体识别中的应用效果,解决了常规测井方法解释储层物性和孔隙结构以及可动流体识别中的难题,达到了解决储层产能问题、更好地为油气田勘探开发服务的目的。

Nuclear magnetic resonance logging method can directly detect petrophysical properties, oil-filled properties and fluid types of the strata to solve those problems encountering in other conventional logging methods, i.e., the computations for formation porosity, permeability and oil and gas saturation are affected by lithologic factors etc. Nuclear magnetic resonance logging method can not only recognize the pores with various sizes in the strata, but also directly recognize the fluid types without relying on the help of resistivity. Nuclear magnetic resonance logging method can better evaluate reservoir petrophysical properties, and has unique advantages in movable fluid analysis. Therefore, the paper primarily described the application effects of nuclear magnetic resonance logging in recognition for reservoir petrophysical properties, oil-filled properties and fluid types, and solved the problems for reservoir petrophysical properties and pore structure interpretations and movable fluid recognition in the conventional logging method, and gained the point to solve reservoir production capability problems, and better to serve oil and gas field exploration and exploitation.